05000255/FIN-2010010-02
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Finding | |
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| Title | Adequacy of the One-Time Inspections Using Remote Visual Examinations |
| Description | The inspectors were concerned about the reliability of the results of several one-time boroscopic inspections (remote visual) performed to detect loss of material due to crevice, pitting, general corrosion etc. During some of the inspections witnessed, the inspectors observed that the Character Card was calibrated perpendicular to the boroscope, but the surface being examined was parallel to the boroscope. Also, several visual examination record sheets reviewed by the inspectors contained reference to 18 percent neutral gray card instead of the character card, inspection angle of 30 to 45 degrees as opposed to the actual angle of zero degrees used during examinations. The inspectors were also concerned this examination would not be likely to detect pitting due to the geometric constraints of the areas examined and the non-flexible boroscope used. The licensee captured these concerns in Condition Reports CR-PLP-2010-5624, CR-PLP-2010-5283 and CR-PLP-2010-04836. This examination adequacy issue is considered unresolved pending reconciliation of the boroscopic inspection results and establishing the basis for the manner in which the one-time inspection commitment is met by the licensee. This will be inspected during the IP 71003 Phase II team inspection (URI 05000255/2010010-02). |
| Site: | Palisades  |
|---|---|
| Report | IR 05000255/2010010 Section 4OA5 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | URI: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71003 |
| Inspectors (proximate) | A Stone B Jose T Bilika Stoneg O'Dwyer J Gavula J Neurauter M Munir T Bilik |
| INPO aspect | |
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Finding - Palisades - IR 05000255/2010010 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palisades) @ 2010Q4
Self-Identified List (Palisades)
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